Material-spooling mechanism



July 31, 1928. 1,678,710

J. N. sELvlG MATERAL SPOOLING MECHANISM Filed Jan. 2, 1926 @Jeff/.

Patented July 3l, 1928.

UNITED STATES PATENT OFFICE.

JOHN NILSEN SELVIG, OF CHICAGO, ILLINOIS, ASSIGNOR TO WESTERN ELECTRICCOMPANY, INCORPORATED, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

MATERIAL-SPOOLING MECHANISM.

Original application filed July 12, 1924, Serial No. 725,660. Dividedand this application led January 2,

1926. Serial No. 78,841.

This invention relates to material spooling mechanisms and moreparticularly to a spool support, and has for its primary object theprovision of an improved device of 5 this type which permits a-filledspool to be expeditiously removed from and an empty one firmly 'lockedconcentrically upon a driving spindle without removal of any parts. l

This application is a division of my copending application, Serial No.725,660, filed July 12, 1924, which has issued as Patent 1,608,249,dated November 23, 1926.

In accordance with one embodiment of this invention, mechanism isprovided for locking and unlocking a take-up spool to and from itsdriving spindle, which comprises an expansible sleeve member rotatablysecured to but longitudinally movable upon 20 a spindle and adapted uponexpansion to clamp the spool between a collar rotatable with the spindleand a plurality of cam surfaces upon the member.

Other objects and advantages of this 1nvention will more fully appearfrom the following detailed description taken in connection with theaccompanying drawing which illustrates one embodiment of this invention,in which Fig. 1 is a vertical sectional view through the improved spoollocking and unlocking device; and t Fig. 2 is a sectional view taken onthe line 2--2 thereof looking in the direction indicated by the arrows.

In the drawing, the improved spool locking and unlocking device of thisinvention is shownapplied to a take-up spool driving spindle of a wiredrawing machine of the type illustrated and described in thehereinbefore referred'to co-pending applicat1on.

Referring now to the drawing in detail, the numeral indicates a take-upspool driving spindle which is continuously rotated by suitablemechanism (not shown). The spindle 10 projects from a take-up drivehousing (not shown), and is provided with a bore 12 carryingsubstantially midway of its length a sliding block 13.l The block 13 issecured to the spindle 10 to rotate therewith by a pin 14 fixed to theblock 13 and projecting upon opposite sides into elongated slots 15formed in the wall of the bored out portion of the spindle 10. Withinthe bore 12 at the right-hand side of the block 13 is a sleeve 18provided with an enlarged outer end in the form of a head 19, theperipheral surface of which is tapered inwardly from a point coincidentwith the periphery of the spindle 10 asv indicated at 60 20. The sleeve18 is fixed to the spindle 10 by pins 21. The bore of the sleeve '18sup` ports a screw 22 provided with a knurled head 23, the screwthreaded shank of the screw being threaded into the bore of the sleeve18 and adapted to engage the righthand side of the block 13.

Resting at one end against the left-hand side of the block 13 and at itsopposite end against the end wall of the bore 12 is a com- 70 pressionspring 24 for holding the block 13 in engagement at all times with thescrew 22 so that upon turning outwardly the screw 227 the block 13 willfollow to the right as viewed in Fig. 1 until the pin 14 rests at 75 theright-hand end of the slots 15. Suitably keyed to the spindle 10 is acollar 27 against whichv the inside head of the spool is clamped. Uponits right-hand face the collar 27 is provided with an annular channel 8028, and adapted to 'ride therein is an outwardly -extending ange 29formed upon a cone-shaped collar 30 free to slide longitudinally uponthe'spindle 10. Within a hollow formation 31 of the cone-shaped collar85 30 is a compression spring`32, one end of which rests against thecone-shaped collar 30 and the opposite end against the collar 27. `Thecollar 30 is limited in its movement to the right upon the spindle 10 byits en- 90 gagement lwith a pin 33 projecting from the periphery of thespindle 10.

The pin 14 fixed to the block 13 and the ends thereof which pass throughthe'slots 15 of the spindle 10 project into suitable open- 95 ingsformed in one end of collet 35 provided with six expanding jaws 36 (Fig.2) and which is slidable longitudinally upon the spindle 10. The freeends of the jaws 36 yare provided with an internally formed taperedsurface 37 for engaging the tapered peripheral surface of the head 19and also with an externally formed tapered surface 38, which projectoutside of the periphery of the body portion of the collet, and areadapted in the locking of a spool 39 upon the spindle 10 toengage theright-hand end of the bore of the spool (Fig. 1) to position the spoolconcentrically with the axis of the spindle and to lock it thereon, theleft-hand '11.

end of the spool being supported concentrically with the axis of thespindle is as follows: It will be noted (Fig. 1) that the expanding jaws36 of the collet 35 while in an operated position do not lie in a hori-Zontal plane, but it will readily be understood that upon being releasedthey assume a substantially horizontal position.

To release a filled spool from the spindle 10 and replace it with anempty one, the head 23 of the screw 22 is given a few turns in acounter-clockwise direction which allows the block 13 to move to theright, due to the energy stored in the compression spring 24 until thepin 14 rests at the right-hand end of the slot 15. In moving to theright,.the block 13 through the pin 14 carriesthe collet with it,thereby allowing the jaws 36 to 'return to their normaltposition, theinternally formed tapered surface 37 riding down the tapered peripheralsurface of the head 19 of the sleeve 18. This also releases the taperedsurface 38 of the expanding jaws 36 from engagement with the spool. The

-jaws while in their normal released position lie-wholly within `thebore of the spool. Upon releasing the jaws 36 the spring 32 functions tomove the cone-shaped collar 30 to the right which will insure that thenext spool mounted in position, even though its bore is a trifle largeror smaller, will be concentrically mounted with respect to the axis ofthe spindle 10. n mounting an empty spool upon the device, the left-handhead of the spool is pressed into engagement with the flange 29 of thecone-collar 30 until the will be moved to the left, thereb right-handhead of the spool is to the rear of the externally formed tapered-surface 38 of the jaws 36, and thereupon the head 23 of the screw 22 isgiven/'a few turns in a clockwise direction which due to the end of thescrew 22 engaging the block 13 the collet 35 causing the internallyformed tapered sur ace 37 of the expanding jaws 36 to ride up thetaperedperipheral surface of the head 19 formed. on

the sleeve l8-and thereby cause a wedglng action to take place' betweenthe externally formed tapered surface 38 and the vertical outside faceof the spool head.- This causes the spool to befirmly clamped betweenthe collar 27 and the tapered surface 38 of the jaws 36 and therebylocked to the spindle 10.

It will thus be apparent that a filled spool may be readily removed fromand an empty one firmly locked to the driving spindle without difficultyand within a short time, as well as without detaching any parts of thedevice which might` become misplaced or lost. Also due to the springpressed coneshaped supporting and guiding collar 30and the taperedsurface 38 of the jaws 36, the

4 to move the outside end of the spool outside of the tapered surface 38of the jaws 36, thereby preventing jamming of the locking parts, withthe result that no tools are required to lock or unlock the spool 39 toits driving spindle.

What is claimed is:

1. In a spool locking device, a driving element, a cam member having anoffset tapered surface extending across a portion of the outer surfaceof and engageable with one head of a spool and arranged to rotate withsaid element, means rotatable with the driving elelnent and having atapered surface engaging another head of the spool, and means forcausing relative movement between said means and member to clamp theheads between the tapered surfaces.

2. In a spool locking device, a driving element,.a member provided witha plurality of offset tapered cam faces arranged to rotate with saidelement, said cam faces designed to be projected outside of the bore ofa spool and into engagement with one head of the spool, means rotatablewith the driving element and having a tapered surface engaging anotherhead of the spool, and means for actuating said member to.clamp theheads of the spool between the offset tapered cam faces of said memberand the tapered surface means rotatable with the driving element.

3. In a spool locking device, a driving element, an expansible arbormember arranged to rotate with said element and relatively movable in alongitudinal direction, said member provided with a cam face designed toengage one head of a spool, a conical collar rotatablewith the drivingelement engaging another head of the spool, said element and memberdesigned upon a relative movement in a vlongitudinal, direction to causethe expansion of said member and thereby clamp the heads of the spoolbetween the cam face of the member andthe collar rotatable with thedriving element,y and means for imparting a relative longitudinal1lmovement between said element and mem- 4. Ina spool locking device, adriving element, a cam member engageable with one head of a spool andarranged to rotate with said element, means rotatable with the drivingelement engaging another head of the spool, means for causing relativemovement 4between said means and member to clamp the head 4therebetween,and resiliently mounted means associated with said first mentioned meansand having a surface engaging the second mentioned spool head forvcausing the spool to move longitudinally into a freely removableposition upony a reverse actuation of said second mentioned means.

5. In a spool locking device, a driving element, aU member arranged torotate therewith provided with a plurality of concentrically arrangedcam faces, onel of said cam faces extending beyond the bore andengageable with one head of a spool and another cam face engageable witha cam face provided upon the outer end of the driving element, meansrotatable with the driving element engaging another head of the spool,and means for causing relative movement between the latter two mentionedcam faces to cause the heads to be clamped between the first mentionedcam face and said means.

6. In a spool locking device,`a driving element, a conical collarsurrounding theelement forv receiving the bore of one head of a spool,resilient means normally maintaining the collar in a predeterminedposition longitudinally of the element, and an eX- pansible arborcarried by the element and provided with a cam face for engaging theother head of the spool, thereby moving the collar against the resilientmeans to resiliently clamp the spool between the cam face and thecollar.

7 In a spool locking device, a hollow shaft for receiving a spool,an'internally threaded bushing secured in the end thereof and having acam faced annular head, a member slidably mounted within the shaft,a-member threaded through the bushing and engaging the slidably mountedVmember for moving the slidably mounted member longitudinally of theshaft, and a clamping member eX- terior of the shaft and having one camsurface engagingy the cam face of the annular head and another cam faceengaging and thereby clamping the spool upon the shaft, said clampingmember secured to and movable with said slidable member.

8. In a spool locking device, a hollow shaft for receiving a spool, aninternally threaded bushing secured in the end thereof and having a camfaced annular head, a member slidably mounted within the shaft, a memberthreaded through the bushing and engaging th-e slidably mounted memberfor moving the slidably mounted memberlongitudinally of the shaft,resilient means mounted within the shaft and maintaining the slidablemember in engagement with the threaded member, and a clamping memberexterior of the shaft and having one cam surface engaging the cam `faceof the annular head and another cam face engaging and thereby clampingthe spool upon the shaft, said clamping member ,secured to and movablewith said slidable member.

9. In ba spool locking device, a hollow shaft for receiving a spool, aninternally threaded bushing secured in the end thereof and having a camfaced annular head, a member slidably mounted within the shaft, a memberthreaded through the bushing and engaging the slidably mounted memberfor moving the slidably mounted member longitudinally of the shaft, aconical collar slidably mounted around the shaft, resilient meansinterposed between a portion of the collar and the shaft. formaintaining the collar normally in a predetermined position,

and a clamping member exterior of the shaft and having one cam surfaceengaging the cam face of the' annular head and another cam face engagingand thereby clam ing the spool upon the shaft against the fldrce exertedby the resilient means on the collar, said clamping member secured toand movable with said slidable member.

In witness whereof, I hereunto subscribe my name this 17th day ofDecember, A. D.

JOHN NILSEN SELVIG.

